Swift & Co.'s Express, Paid, crude printed shield frank at top center on 3¢ red (U10) buff entire to San Francisco, cancelled by blue "Wells Fargo & Co., Steamboat" handstamp (Leutzinger type 2-7), Very Fine. Estimate  $750 - 1,000. A RARE SWIFT & CO. AND WELLS FARGO & CO. CONJUNCTIVE STEAMBOAT USE. $0 (Image)